KYIV: Ukraine has signed a contract with Pfizer for an additional 10 million doses of its coronavirus vaccine, brining the total number of doses to 20 million, President Volodymyr Zelenskiy’s office said on Saturday.

“We signed a contract. Hence, we will receive a total of 20 million doses of Pfizer vaccine this calendar year,“ the presidential office quoted Health Minister Maksym Stepanov as saying.